its actually a caterpillar v none the less still a big engine i met the original owner when i was buying it from the nd owner the original owner swapped the engine and a speed tranny out of a ford dump truck in the body was lifted an inch and the front twin ibeam was reenforced and a set of motorcycle shocks were added to the original in order to accept and hold that big anchor i drove miles at miles per hour with it and averaged mpg no joke for a s diesel engine swap this was professionally done and everything works just the way it should it even has a s diesel tachometer added no idea where he got it